18563780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 40388544

約数和(自身を除く): 21824764

約数列:

[1, 2, 4, 5, 10, 20, 53, 83, 106, 166, 211, 212, 265, 332, 415, 422, 530, 830, 844, 1055, 1060, 1660, 2110, 4220, 4399, 8798, 11183, 17513, 17596, 21995, 22366, 35026, 43990, 44732, 55915, 70052, 87565, 87980, 111830, 175130, 223660, 350260, 928189, 1856378, 3712756, 4640945, 9281890, 18563780]

約数ペア:

[(1, 18563780), (2, 9281890), (4, 4640945), (5, 3712756), (10, 1856378), (20, 928189), (53, 350260), (83, 223660), (106, 175130), (166, 111830), (211, 87980), (212, 87565), (265, 70052), (332, 55915), (415, 44732), (422, 43990), (530, 35026), (830, 22366), (844, 21995), (1055, 17596), (1060, 17513), (1660, 11183), (2110, 8798), (4220, 4399)]